SKU: 36089613863

The Direction of Time

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Description

The Direction of TimeEver a source of philosophical conjecture and debate, the concept of time represents the beating heart of physics. This final work by the distinguished physicist Hans Reichenbach represents the culmination and integration of a lifetime's philosophical contributions and inquiries into the analysis of time. The result is an outstanding overview of such qualitative, or topological, attributes of time as order and direction. Beginning with a discussion of

Ever a source of philosophical conjecture and debate, the concept of time represents the beating heart of physics. This final work by the distinguished physicist Hans Reichenbach represents the culmination and integration of a lifetime's philosophical contributions and inquiries into the analysis of time. The result is an outstanding overview of such qualitative, or topological, attributes of time as order and direction.
Beginning with a discussion of the emotive significance of time, Reichenbach turns to an examination of the time order of mechanics, the time direction of thermodynamics and microstatistics, the time direction of macrostatistics, and the time of quantum physics. He offers coherent explanations of the analytic methods of scientific philosophy in the investigation of probability, quantum mechanics, the theory of relativity, and causality -- methods that he not only applies here but also helped to develop and refine.
Physics Today observed that For a generation Professor Reichenbach has worked as almost no other man to bring to the interpretation of modern physics the critical and reflective thinking of a trained philosopher. Most physicists who retain an interest in philosophy, and many who wanted simply to understand physics, have read some of the earlier books of Reichenbach. This one is . . . the best by a good deal. Introduction. Appendix. Index.



Binding Type: Paperback
Publisher: Dover Publications
Published: 07/02/1999
ISBN: 9780486409269
Pages: 304
Weight: 0.68lbs
Size: 8.48h x 5.34w x 0.65d

Review Citations: Scitech Book News 03/01/2001 pg. 46

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SKU: 36089613863

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Brady Perry
Bozeman, US
★★★★★ 5
My dog's favorite toy to date
Color: Blue
Heavy duty material that my dog has not destroyed. The vibrating ball inside is made of hard plastic, so beware if your dog likes to shake their toys, it definitely hurts to get whacked by this. The velcro keeping the ball inside is also heavy duty and takes a lot of strength to open. All in all, its a great toy and one of my dog's favorites.
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Reviewed in the United States on June 10, 2026
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MandyMT
West Palm Beach, US
★★★★★ 3
Good enough.
Color: Blue
A little smaller than I thought and the battery doesn't last too long. But my puppy enjoys it enough. It is holding up well to her teeth as well.
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Reviewed in the United States on April 16, 2026
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Pail
Belleville, US
★★★★★ 5
My dog loves this toy!
Color: Green
I was NOT expecting my dog to like this toy, but she loves it! The legs are stretchy and the body vibrates. The battery lasts about a month.
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Reviewed in the United States on June 8, 2026
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Amazon Customer
Lake Worth, US
★★★★★ 5
Great interactive toy. Worth the price.
Color: Blue
Our Lab absolutely loves it. She throws it all over the house. It’s so fun to watch her play with it. It’s by far her favorite toy right now. It’s easy to charge and came with charging cable. It has a button to turn off and on and a couple different speeds. My parents got her a different one for Christmas and since she loved it so much we decided to get her another one. It’s pretty durable too. She normally rips through toys pretty quickly and both of the ones she has are still in good shape. No rips or tears. She hasn’t tried just chewing on it like she does her squeaky toys. She just throws it all around the house and chases it.
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Reviewed in the United States on March 17, 2026
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Jeremy Elston
Louisville, US
★★★★★ 4
Fun, enticing dog toy. As stated in description it won’t hold up for aggressive chewers
Color: Blue
Rating this based on description. My dog loved this toy. It was smaller than I had pictured in my head, but that was on me. I did read the description ahead of time, which clearly states this is not for aggressive chewers. My dog is trained not to rip toys apart so I wanted to give this a shot, but i guess just her jaw strength and teeth were too much. She carried it everywhere. I turned it on periodically. The movements are small, but enough for her to be captivated with the toy. It did mostly survive for about a day before I needed to take it away due to the Velcro opening. Once it started to pull apart she did chew a piece of the Velcro off. It might be helpful with a flap over design covering the Velcro. I have a singing Santa decoration like this where the Velcro is covered up and I have to pull it back a little to get to the Velcro opening. The gaps on the sides of the closure are a bit to large making it tempt my dog to pull and open it up. I wish there was a more durable option that could hold up to aggressive chewers, but this product was clear about that in the description. I think the opening to the batteries could use some improvement. Granted I do not have the perfect answer to fix this, but I am also not a toy designer.
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Reviewed in the United States on April 19, 2026

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